What To Do If - wtw inoLab Multi 9310 IDS Operating Manual

What to do if...

Error message
OFL, UFL
Error message,
Error
98
15 What to do if...
15.1 pH
More information and instructions on cleaning and exchange of
sensors are given in the documentation of your sensor.
The measured value is outside the measuring range.
Cause
IDS pH sensor:
– The measured value is outside
the measuring range of the
meter
– Air bubble in front of the junction
– Air in the junction
– Cable broken
– Gel electrolyte dried out
Cause
IDS pH sensor:
– The values determined for zero
point and slope of the IDS pH
sensor are outside the allowed
limits.
– Junction contaminated
– Sensor broken
Buffer solutions:
– The used buffer solutions do not
agree with the set buffer set
– Buffer solutions too old
– Buffer solutions depleted
inoLab
Remedy
– Use suitable IDS pH sensor
– Remove air bubble
(e.g. sway or stir the solution)
– Extract air or moisten junction
– Replace the sensor
– Replace the sensor
Remedy
– Recalibrate
– Clean junction
– Replace the sensor
– Set different buffer set
or
– Use different buffer solutions
– Use only once.
Note the shelf life
– Change solutions
ba75937e10
®
Multi 9310 IDS
08/2021